Work-arbor support



H. J. AND F. R. EBERHARDT.

WORK R-RBOR SUPPORT. APPLICATION FILED JULY i, 1919.

Patented Nov. 2-, 1920.

s SHEETS-SHET 2.

A TTORNE Y H. AND F. R. EBERHARDT.

WORK ARBOR SUPPORT.

APPLICATlON FILED JULY 1. 1919,

1,357,696.. Patented Nov. 2, 1920.

3 SHEETS-SHEET 3.

Fig.9

IIVVEIVTOR A TTORNE Y UNETED STATES rarsnr orrics."

I-IENRY J. EBERHARDT AND FRED ROSS EHERHARDT, OF NEWARK, NEW JERSEY, I ASSIGNORS TO NEWARK GEAR CUTTING MACHINE 00., OF NEWARK, NEW JER SEY, A CORPORATION OF NEW JERSEY.

WORK-ARBOR.

T 0 all whom it may concern Be it known that we, HENRY J. Ense- HARDT and FREoRoss EBERHARDT, citizens.

of the United States, and residents of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Vork-Arbor Supports, of which the following is a specification.

The invention relates to cutting machines, and more particularly to machines in which the cutter or work arbor is provided with an end support bearing, for example, as in milling and gear cutting machines. In machines of this character, particularly when operating on large quantitles of work of the same size, it is of importance to minimize the number of movements required of the operator in the mounting of the cutter or work.

It is the object of the present invention'to provide means whereby the arbor support may be moved and swung out of the way,

thus enabling the cutters or blanks' to be more readily placed and removed and in manner to effect a considerable saving in time over methods heretofore in use. vThe invention is especiallyiapplicable to apparatus wherein the column or supporting member is made of a ribbed construction or box type, which construction very satisfactorily resists cutting .st'rains under heavy work: and the invention,as embodied in a machine of this character, is shown in the accompanying drawings, in whicl1 Figure 1 is a side elevation of a machine. Figs. 2 and 3 are fragmentary views,'respcctively in plan and side elevation, of a support membergsli'de member, bearing -member and splndle. 1

Figs. 4 and 5 are fragmentary views, respectively in plan and side elevatlon of .a support member arranged without the use of a sliding spindle.

Figs. 6 and 7 show hinge member locking means employing a cam handle arrange ment.

means employing a taper wedge arrangement.

Similar characters of reference designate corresponding parts throughout the several views.

Referring to the drawings, 10 designates Specification of Letters Patent.

Application fildfl'fuly 1,

Figs. 8 and 9 show hinge member locking Patented Nov. 2, 1920.

1919. Serial No. 307,889.

the frame or bed of the machine, herein shown, by way of example, as a vertical gear cutting. machine, having a cutter 11 mounted in a carriage 12 which is slidable vertically upon ways 13 of a stanchion 14. The latter is secured to the said frame or bed 10, upon which is also adjustably mounted a work housing 15 101' the work or gear blank 16 to be operated on by the cutter 11, the housing being further secured to a column 17 as by screws 18, to be movable horizontally therewith on ways 19 of the frame 10.

The usual arbor 20 is arranged to fit within the work 16 and is arranged to be secured at its arbor end by a spindle member 21 having a suitable socket 22 to receive the end of the arbor. Spindle 21 is adjustably secured at the inner endof an arm or bearing member 23 to slide therein, and is arranged to be locked thereto as, for example, by means of a clamping nut 2a. A handle 25 may be provided at the outer end of the spindle to facilitate the adjustment of same. Vertical clearance from arbor 20 may,in many instances, thus be obtained by merely adjusting vertically the said spindle 21, to

enable the bearing member or arm 23 to be swung outwardly for removal of the work or arbor. H

The latter movement is accomplished, with reference to the column 17, by hingedly connecting or swivelling the said arm, in manner hereinafter described, to a slide 26 movable vertically through ways 27 complementary to ways 28 of the column and to which it may be secured as through clamping nuts 29. Any convenient manner of hingedly securingarm 23 to the slide 26 may be employed, for example, as by means of a hinge pin or pint'le 30; and the two members maybe locked together by means of corresponding swinging bolts 31 and nuts 32, the said bolts being. preferably secured to the slide by means of a pin 33 which passes through the eyes of both bolts. Of course, other well-known expedient-s, such as cam handles or wedges as shown in Figs.

6, '7, 8 and 9, may be substituted for the lower'face of the arm 2 nuts 32 are loosened to permit arm 23 to be swungoutwardly in a plane'at rightangles slide 26 bymeans of a cam lever32 bearing against the swinging bolt 31. In Figs. 8 and 9 the arm 23 1s shown secured to slide 26 by means of a wedge 32" bearing against the bolt 31.

It is preferred, also, to counterweight the slide and arm as, for example, by providing a sheave or pulley wheel 34, rotatably' mounted at the upper end of the column 17, over which is designed to pass a cable 35 at tached at one end to the said slide, and having secured to its other end a suitable counterweight 36. movable within the column 17. i

To set the apparatus in operating position, the slide 26 carrying arm 23 is released through the bolts 29 and placed ina vertical position slightly above the top of the arbor 20. The spindle 21 is also placed so that its lower end is about flush with the to the complementary guideways 27 and 28 of the column 1'? team inoperative position and sufficiently to allow for insertion of arbor and blank. Thereupon, the arbor, or arbor and blank, is lowered into place and secured in the work housing 15 and arm 23returned to position over the arbor, the

slide 26 remaining locker through the nuts 29. The spindle 2l is then lowered'so that its socket 22 registers with the. arbor 20,

clamping nut 24 being tightened to rigidly clamp the spindle to the arm. To again :to support the arbor. The benefits or time saving, by moving the'bearlng a short vertical distance before loosening nuts 32 and then swing ng the arm 23 out ot the way,

are-still retained. In this case, the vertical spindle 21; y

clearance from arbor 20 is obtained through the movement of the slide 26 on guide ways 27 as distinguished from the former case where the vertical clearance was obtained solely through the vertical movement of the e claim: 7

Thereupon, the

member adjustably arranged to move upon the guide ways of said supportingmember, a bearing member hingedly connected to said slide to swivel at right angles to said guide waysv to an inoperative position, a

spindle mounted in said bearing member, and achustable means to secure said spindle in an inoperative position.

3. In combination: a supporting member' provided with guide ways, a slide member adjustably arranged to move upon the guide ways of said supporting member, means to clamp said slide to said guide ways, a bearing member hingedlyconnected to said slide, clamping means to secure the bearing member to the slide, a spindle mounted: in said bearing. member, and means to clamp said spindle to said bearing member.

4. In combination a supporting member provided with guide ways, a member adjustably arranged to move upon the guide ways of saidsupporting member, a be, ring member. hingedly connected thereto, a spindle mounted in said bearing member, adjustable means to secure said spindle -in position, a sheave mounted onsaid supporting member, a counterweight movable in said supporting member,= and means. passing over 's'aid sheave and connectingsaidcounterweight to said slide.

5. Ina gear cuttingmachine; a frame, a work arbor,a suitable housing mounted on said frame for supporting the work and work arbor, a boxtype supporting member movable with said housing and provided with guide ways, a slide member adjustably arranged to move on the guide ways Ofsaid supporting member, a bearing member swiveled to said slide memberand movable. oversaid' arbor, means to clamp said slide to the supporting member, means to clamp the bearing member to the slide, a

spindle adjustably mounted at the tree end of said bearing member and having a socket to receive the. free end of the arbor, a sheave -mounted on said supporting member, counterweighting means movable in said supportlng member, and a cable secured to said counterweighting member passingover said sheave and connected also to said slide.

Signed at Newark, in the county of Essex .and'State of New Jersey, this 27th day of r June, A. D. 1919,v V. r

1. In combination: asupporting member provided with guide ways, a member adjustably arranged to move upon the guide HENRY J. nnnnrmnnr, FRED ROSS renal-manor. 

